Use the Sales Tax Calculator to add sales tax to a price and see the total you will pay.
How to Use
Enter the price before tax and the sales tax rate as a percentage, then press Calculate. The result shows the tax amount and the total price.
Formula in Plain Words
Multiply the price by the tax rate and divide by 100 to get the tax. Add that tax to the price to get the total.
Worked Example
For a price of 100 with a 20% sales tax rate, the tax is 20 and the total price is 120.
FAQs
Do I enter the tax rate as a percentage?
Yes. Enter 20 for a 20% tax rate.
What if the price already includes tax?
Then do not use this calculator on that price, because it would add tax a second time. It is for prices before tax.
Does the tax rate vary?
Yes, it depends on where you buy and what you buy, so use the rate that applies to your purchase.